was a slightly "better" idea, as $1 wasn't being reset on a failed match
and so existed/causes the print. I can't find where/why the /i resets $1
on a failed matches though. The "Owls" book does talk about the expense
and copies made with '/i' and how it ends up w/ at least 2 REs (original
and a lower case version) but I don't have a debug version of perl to try
-Dr on to see the difference (assuming I could understand the output).